JPH1148375A - Apparatus for forming label, cassette therefor, and linerless label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To develop a cassette system label-forming apparatus capable of forming a label by using a winding body of a label sheet with a linerless adhesive layer and giving ink information at a working site according to circumstances, and also capable of fixing the label easily to an adherend with the label with the aid of the adhesive layer provided in advance on the label sheet. SOLUTION: This label-forming apparatus includes a mounting part 11 for a label- forming cassette 20 with a case 2 containing a winding body 31 of a label sheet 3 having an adhesive layer 34 on one face of a base material 33 to be printed, and a marking means 6 for performing printing on a label sheet portion unwound from the winding body. As necessary, a label-forming apparatus provided with an unwinding means 5 for the winding body and the winding body are contained in the case 2, and a fitting part is provided which enables a writing head of the marking means disposed outside the case 2 to be positioned on a rear face side of the base material 33 of a portion unwound from the winding body 31. As necessary, the apparatus has a fitting part for the unwinding means or houses therein the unwinding means, and further houses therein a winding reel for an ink ribbon.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wound body without a separator for covering an adhesive layer, printing a pattern or the like on the spot, printing a label on site, and adhering and fixing the label to an adherend via the adhesive layer. The present invention relates to an apparatus for forming a linerless label and a cassette therefor.

[0002]

2. Description of the Related Art Conventionally, various kinds of labels such as barcode labels and nameplate labels can be issued on the spot by printing ink information on a label sheet via a printer at a job site, and a label sheet can be issued via an adhesive layer previously applied to the label sheet. As a label forming device that can be adhered and fixed to an adherend, a roll of a label sheet in which an adhesive layer provided on a substrate to be printed is covered with a separator and a cassette containing an ink ribbon are attached, and the roll is mounted. A device that prints on a label sheet surface while rewinding has been known. In this case, a separator that covers the adhesive layer is indispensable, and without it, it becomes difficult to rewind the wound body, and it is not possible to manufacture a label by adhering to parts in a cassette or a printer.

[0003] However, the separator must be peeled off from the adhesive layer when adhering to the adherend, and is difficult to peel off from the adhesive layer because it is thin and flexible, and the peeled-off separator becomes an unnecessary product such as dust. There was a point.

On the other hand, separators for covering an adhesive layer, such as a delayed tack type, a printed type, a type in which an adhesive layer and a release layer are alternately laminated and the adhesive layer is sandwiched by a substrate to be printed, and a thermosensitive coloring type. A linerless label sheet that eliminates the need for has been proposed.

[0005] However, the delayed tack type has a problem in that it requires a heating means and labor for developing adhesiveness, and cannot be placed at a high temperature to prevent blocking or the like. In addition, the printed type has a problem in that it is not possible to print a predetermined item and issue a label on the spot because the printing is completed in advance. Further, the sandwich type has a problem that it is necessary to provide a complicated printing mechanism capable of printing on both sides of the label sheet. On the other hand, heat-sensitive coloring type has light resistance, water resistance, chemical resistance, moisture resistance,
There is a problem that the heat resistance is poor, the applied information is decolored, bleeds, fogged, etc., so that it is difficult to read it visually or with a bar code reader, and cannot be used outdoors.

[0006]

SUMMARY OF THE INVENTION The present invention is to provide a durable information made of ink on the spot by using a roll of a label sheet with an adhesive layer in a linerless state without a separator that covers the adhesive layer. An object of the present invention is to develop a cassette type forming apparatus for a linerless label that can be applied to form a label and the formed label can be easily fixed to an adherend via an adhesive layer previously applied thereto.

[0007]

The present invention relates to a label sheet having a pressure-sensitive adhesive layer on one side of a substrate to be printed, wherein the pressure-sensitive adhesive layer is adhered to the back surface of the substrate to be printed, and a roll-shaped wound body is accommodated in a case. And a writing means for printing on the back surface of the substrate to be printed of the label sheet portion unwound from the wound body, and if necessary, the wound body Another object of the present invention is to provide a label forming apparatus, which is provided with a forward feeding means for transporting a label sheet while rewinding it.

The present invention also relates to a label forming apparatus which is detachably mounted and held on a mounting section of the label forming apparatus, wherein the adhesive layer in a label sheet having an adhesive layer on one side of a substrate to be printed is provided. At least a rolled wound body adhered to the back surface is accommodated in a case, and a writing head of writing means disposed outside the case is used to print a base material of a label sheet portion rewound from the wound body. It has a fitting portion that can be located on the back side of the material, and has a fitting portion that can arrange a forward feeding means outside the case at a position where the winding body of the label sheet can be rewound as necessary, or has a built-in progressive feeding device, The present invention also provides a label forming cassette in which a reel around which an ink ribbon is wound as necessary is accommodated in a case.

[0009]

According to the present invention, a label can be formed by using a linerless roll of a label sheet to give on-site information with excellent durability made of ink on an on-site basis. It is possible to efficiently obtain a linerless label that can be easily fixed to an adherend via an adhesive layer applied in advance. Therefore, a separator for the adhesive layer cover, which is unnecessary when the label is put to practical use, can be made unnecessary, and resources can be saved, and the separator removing step can be omitted. Further, by using the cassette method, the label sheets can be easily exchanged, and labels having different sheet base materials can be efficiently formed.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The label forming apparatus of the present invention comprises a roll-shaped wound body in which a pressure-sensitive adhesive layer of a label sheet having a pressure-sensitive adhesive layer on one surface of a substrate to be printed is adhered to the back surface of the substrate to be printed. At least equipped with a mounting portion of a label forming cassette housed in a case, and writing means for printing on the back surface of the printing substrate of the label sheet portion unwound from the winding body, if necessary. It is equipped with a forward feeding means for transporting the label sheet while rewinding it from the wound body.

FIG. 1, FIG. 2, and FIG. 3 schematically show the label forming apparatus 10 described above. 11 is a cassette mounting portion, 2
Numeral 0 denotes a label forming cassette, numeral 2 denotes a case thereof, numeral 3 denotes a label sheet, numeral 31 denotes a wound body thereof, and numeral 6 denotes a writing head of writing means. In the label forming apparatus 10, reference numeral 1 denotes an apparatus body, 5 denotes a sequential feeding means, 7 denotes a cutter, and 8 denotes a control mechanism housing section. In the label forming cassette 20, reference numeral 21 denotes a fitting portion of the writing head 6, reference numeral 22 denotes a fitting portion of the progressive feeding means 5, reference numeral 32 denotes a guide roll of the label sheet 3,
Is an ink ribbon, 41 is a winding reel thereof, 42 is a take-up reel, and 51 is a sequential feeding means. Further, 33 is a substrate to be printed forming the label sheet 3, 34 is an adhesive layer, and 43 is ink information.

The label forming apparatus shown in FIGS. 1 and 2 is provided with a forward feeding means 5 for rewinding and transporting the label sheet 3 from a winding body 31 on the side of the apparatus.
Does not have a sequential feeding means inside. FIG.
The label forming apparatus illustrated in FIG. 1 includes a forward feeding unit 51 that conveys the label sheet 3 while rewinding the label sheet 3 from the winding body 31 into the cassette.
And the apparatus side is not equipped with a progressive feeding means.

According to the apparatus shown in FIGS. 1 and 2, the forward feeding means 5 and the write head 6 are provided on the apparatus side in advance so as to face each other.
Mounting part 11 formed so that it can be detachably mounted and held
When the cassette 20 is mounted in a predetermined state, the progressive feeding means 5 and the write head 6 disposed outside the case (cassette) 2 automatically enter the fitting portions 21 and 22 formed in the cassette, and the label sheet. The rewinding portion 3 is located between the sequential arrangement of the forward feeding means 5 and the write head 6, and is automatically set to a state in which the transport of the label sheet 3 and the writing on the back surface of the substrate 33 to be printed can be performed. It has become so.

On the other hand, in the apparatus shown in FIG.
A forward feeding means provided in advance in a state in which the label sheet 3 can be conveyed in the cassette by mounting the cassette 20 in a predetermined state on the mounting portion 11 formed so that the cassette 20 can be removably mounted and held. 51 is positioned opposite the write head 6 that has entered the fitting portion 21, and the rewinding portion of the label sheet 3 is positioned between the write head 6 and the rear surface of the printing substrate 33. Is automatically set to a state in which it is possible to fill in.

Next, the platen roll, the label sheet 3 and the label sheet are rotated by controlling the progressive feed means 5 and 51 formed of a platen roll via a drive source (not shown) while controlling them via a control mechanism (8). The winding body 31 and the winding reel 41 are formed via the frictional force of the ink ribbon 4.
The label sheet and the ink ribbon are rewound and overlapped with each other, and the ink ribbon is conveyed while being positioned on the write head side of the writing means, and is guided to the write head portion 6 disposed opposite to the platen roll.

The label sheet 3 in the cassette is accommodated such that the back surface (non-adhesive layer side) of the substrate 33 to be printed is on the write head side as described above, and the write head is controlled by the control mechanism ( 8), and the entry processing is performed based on the write data. Therefore, while the label sheet 3 and the ink ribbon 4 conveyed in the superimposed state pass through the writing head section 6, the head operates to thermally transfer the ink of the ink ribbon to the back surface of the substrate to be printed, thereby forming the ink information 43. Is done. The pressing force required for writing is such that the sequential feeding means 5 and 51 arranged opposite to the writing head work while supporting the label sheet 3.

After the writing process for forming the ink information, the ink ribbon 4 is wound on a rotating take-up reel 42 via a drive source controlled via a control mechanism (8) and overlapped with the label sheet 3. The state is released, and the label sheet is further conveyed in a series of sequential feeds via the platen rolls 5 and 51 to reach the subsequent cutter unit 7. The cutter 7 is controlled via a control mechanism (8), operates when a predetermined length of the label sheet portion on which the ink information is formed passes, cuts the label sheet, and forms a linerless label as illustrated in FIG. 9 is obtained.

In the above-described label forming apparatus, the linerless labels can be formed continuously or intermittently by the control via the control mechanism section (8). The required number of linerless labels having ink information can be formed as occasion demands.

The label forming apparatus of the present invention is provided with at least a mounting portion for a label forming cassette and writing means for performing printing on the back surface of the substrate to be printed of the label sheet portion unwound from the roll. It is only necessary to have a forward feeding means for transporting the label sheet while rewinding the label sheet from the wound body stored in the cassette according to the above. Therefore, a known control mechanism can be applied to the control mechanism section (8) of the apparatus.

The label forming cassette can be detachably mounted on the mounting portion of the label forming apparatus, and the adhesive layer of the label sheet having the adhesive layer on one side of the substrate to be printed is provided on the back surface of the substrate to be printed. At least the wound body in the form of a roll is bonded and housed in a case, and the write head of the writing means arranged outside the case is provided with the printing substrate of the label sheet portion unwound from the wound body. It has a fitting portion that can be located on the back side, and has a fitting portion that can arrange the forward feeding means outside the case at a position where the winding body of the label sheet can be rewound if necessary, or has a built-in progressive feeding device I just need.

As the label sheet, a label sheet having an adhesive layer on one side of a substrate to be printed is used. Examples are shown in FIGS. 33 is a substrate to be printed, 34 is an adhesive layer,
35 is a layer to be printed, 36 is a reinforcing layer, 37 is an internal adhesive layer, 3
8 is an external adhesive layer. FIG. 4 shows a linerless label 9 in which ink information 43 is printed on the back surface of the printing substrate 33 of the label sheet 3 housed in the label forming cassette, that is, the surface having no adhesive layer, and cut to a predetermined length. This is shown.

The label sheet may be a sheet-like material having an adhesive layer on one side of a substrate to be printed and having a back surface and an adhesive surface of the substrate exposed on the surface. Therefore, the substrate to be printed or the adhesive layer may have a suitable layer form as a single layer or a multilayer of two or three or more layers. By the way, in the example of FIG. 4, each of the printing substrate 33 and the adhesive layer 34 is formed of a single-layered material, and forms a two-layered label sheet. On the other hand, in the example of FIG. 5, the substrate 33 to be printed is composed of two layers: a layer to be printed 35 forming the back surface, and a reinforcing layer 36 for supporting the adhesive layer, and the adhesive layer 34 also has an internal adhesive layer 37 and an external adhesive layer. 38
Are superposed on each other.

The printing substrate receives and fixes the ink to be printed on the back surface, supports an adhesive layer provided on the other surface, and releasably adheres to the adhesive layer via the back surface. Is used. A printing substrate that can be preferably used has at least the back surface thereof excellent in ink fixing property, and has a weak adhesive force with the adhesive layer, and does not require a large force for peeling.

Examples of the above-mentioned substrate to be preferably used include a substrate in which the entire substrate is formed of a mixed layer of an ink-receiving resin and a low-adhesion resin, or a substrate in which such a mixed layer is formed on a reinforcing layer or the like. A thin layer or a porous or mesh-like low-adhesion resin layer provided on an ink-receiving layer made of paper, resin, etc. In which the back surface is formed by providing the ink receiving layer and the low-adhesion resin layer according to (1).

The substrate to be printed is formed of a resin having a low adhesive strength to a certain kind of pressure-sensitive adhesive layer and accepting a certain kind of printing ink, or a resin layer provided on a reinforcing layer or the like to provide a back surface. And the like are preferably used. In this case, a label sheet having a pressure-sensitive adhesive layer having a low adhesive strength to the resin layer is printed using the ink received by the resin layer to obtain a target label.

In the above, as the ink receptive resin used for fixing the ink with good durability, a resin which can be printed with an appropriate ink such as a heat fixing type or a drying type can be used. Absent. Incidentally, examples thereof include polyolefins such as polyethylene and polypropylene, polyamides and polyesters, polyvinyl acetates and ethylene-vinyl acetate copolymers, acrylic polymers such as urethane polymers and poly (meth) acrylic acid alkyl esters, and polyvinyl chloride and the like. Styrenic polymer,
Silicone polymers and natural rubber, polyisobutylene and polyisoprene, chloroprene rubber and isoprene / isobutylene rubber, nitrile butyl rubber and styrene / butadiene rubber, styrene / butadiene / styrene rubber, styrene / isoprene / styrene rubber, styrene / ethylene / butadiene rubber, Plastic and rubber polymers such as styrene / ethylene / butylene / styrene rubber, styrene / isoprene / propylene / styrene rubber, and ethylene / propylene terpolymer, and blends thereof are exemplified.

Examples of the low-adhesion resin used for the purpose of lowering the adhesive force to the adhesive layer include, for example, a release coating resin known as an adhesive sheet of silicone type, long-chain alkyl type, fluorine type or the like; Suitable materials such as polyethylene, phosphate ester surfactants, polypropylene, and rubber polymers can be used. Above all, a resin for a release coat, in particular, a silicone resin can be preferably used.

When the mixed layer is formed, the preferable mixing ratio of the ink-receiving resin and the low-adhesion resin is 100 parts by weight of the ink-receiving resin in view of the property of lowering the adhesive strength and the fixing property of the ink. , Low adhesive resin 0.01 to 10
Parts by weight, especially 0.1 to 8 parts by weight, especially 1 to 5 parts by weight.

On the other hand, in the method in which a low-adhesion resin is provided as a thin layer on the ink-receiving layer, the thinner layer achieves a decrease in the adhesive force between the low-adhesion resin and the adhesive layer, and at the same time, the ink fixing property is reduced. The purpose is to maintain. In such a case, the thickness of the low-adhesion resin layer is 0.01 to 10 μm from the target point.
m, preferably 0.05 to 5 μm, particularly preferably 0.1 to 2 μm.

The method of providing a porous or mesh-like layer made of a low-adhesion resin on the ink-receiving layer uses a low-adhesion resin while reducing the adhesive strength between the low-adhesion resin and the adhesive layer. It is an object of the present invention to make it possible to fix the ink through the gap. For this purpose, the ratio of the porous or mesh-like low-adhesion resin layer on the ink receiving layer is 1 to 90%, preferably 2 to 70%, particularly 5 to 50%.
It is preferred that Furthermore, in this case, the thickness of the low-adhesion resin layer is 0.01 to 100 μm from the above-mentioned target point,
It is particularly preferably 0.05 to 50 μm, particularly preferably 0.1 to 20 μm.

The porous or mesh-like low-adhesion resin layer can be formed by an appropriate method, and it is preferable that the gap between the low-adhesion resins is evenly distributed as much as possible. Incidentally, the formation of the porous or mesh-like low-adhesion resin layer is performed, for example, by a gravure printing method, a screen printing method, a pattern forming method by a photoresist, a known porous film forming method by a dry or wet method, a melt blow method, or a curtain spray method. And a suitable method such as a method of laminating a porous or mesh film.

On the other hand, examples of the resin which has low adhesion to the above-mentioned kind of pressure-sensitive adhesive layer and which accepts a kind of printing ink include polyolefin resins such as polyethylene and polypropylene, silicone polymers, rubber polymers, and the like. Long-chain alkyl polymers and the like can be mentioned. The molecular weight of the resin can be appropriately determined according to the compatibility with the ink. Incidentally, in the case of a polyolefin-based resin, it is preferably from 5 to 6 million based on the viscosity average molecular weight from the viewpoint of solvent resistance and ink fixing property.

In the above, the formation of the ink receiving layer which supports the substrate to be printed made of a resin or the back layer or a thin layer thereof or a low-adhesion resin layer such as a porous layer is performed by molding one or more resins. It can be performed by forming a film into a film or a porous shape by an appropriate method such as a method or a coating method. In forming the film, a reinforcing agent such as a fiber, a suitable coloring agent such as a pigment such as silica or titania, alumina or zinc white, zirconia or calcium oxide, or mica, and an appropriate additive such as an antioxidant are blended. Can also. The amount of the additive is preferably 30% by weight or less from the viewpoint of printability and the like.

The above-mentioned label sheet only needs to be in a state in which the back surface of the substrate to be printed is exposed on one side and the adhesive layer is exposed on the other side. Therefore, as shown in FIG. Between the outer adhesive layer 38 and the reinforcing layer 36 or the inner adhesive layer 37.
For example, a suitable layer such as

The above-mentioned reinforcing layer is used as needed according to the use of the label for the purpose of reinforcing the substrate to be printed. Therefore, as the reinforcing layer, an appropriate layer such as a resin coating layer or a film, a fiber or a cloth, a paper or a nonwoven fabric, a metal foil, a net or a wire can be used. The physical properties such as heat resistance of the reinforcing layer may be appropriately determined according to the use of the label and the like. For example, a reinforcing layer made of a heat-resistant resin such as polyester, polyimide, fluororesin or polyamide may be used. The physical properties of the label sheet or the label can be easily controlled by selecting the reinforcing layer. If necessary, measures such as improvement of contrast with ink information to be provided can be applied to the reinforcing layer.

The label sheet having the reinforcing layer is formed by, for example, attaching the above-mentioned back layer of the substrate to be printed on the reinforcing layer by an appropriate method such as a heat laminating method or an extrusion coating method. It can be carried out by an appropriate method such as a method of impregnating a forming material of a molten substrate to be printed or a method of interposing a reinforcing layer in the substrate to be printed.

Therefore, the general forms of the substrate to be printed include various types of paper sheets, films, sheets and foam sheets made of resin, fibers, cloths and non-woven fabrics made of resin, and the like.
Further, there may be mentioned a laminate using two or more of the above-mentioned materials such as paper, film, foamed sheet and cloth, and a composite sheet using such a material in combination with a reinforcing base material such as a metal foil. Note that a substrate to be printed having excellent flexibility is preferable from the viewpoint of the winding property and the curved surface adhesion.

Incidentally, in the case of a label sheet or the like in which an adhesive layer having a low adhesive strength is provided on a substrate to be printed made of paper, the paper exhibits good ink receptivity and can be subjected to good printing processing by various printers. . Also, a mixed layer of a low-adhesion resin such as a silicone resin and an ink-receptive resin such as a polyester resin, or a substrate to be printed including a thin layer of a low-adhesion resin on the ink-receptive resin layer, A label sheet provided with a general-purpose adhesive layer such as a rubber-based on a substrate to be printed having such a layer on a reinforcing layer such as a polypropylene synthetic paper can be used for a sublimation heat transfer type printer via an ink ribbon of a sublimable ink. And good print processing can be performed.

Further, a substrate to be printed having a porous layer made of a low-adhesion resin such as a silicone resin on an ink-receiving resin layer made of a hydrophilic resin or the like, or such a layer is placed on a reinforcing layer such as paper. A label sheet in which a general-purpose adhesive layer such as an acrylic material is provided on a substrate to be printed can be subjected to favorable printing processing by an ink jet printer.

The thickness of the substrate to be printed or the back layer thereof may be appropriately determined depending on the use of the label. Generally,
0.1-500μ from the viewpoint of ink fixing property and strength
m, especially 0.5 to 100 μm, especially 1 to 50 μm. Even when a reinforcing layer is used in combination, the thickness of the back layer of the substrate to be printed is preferably 0.1 μm or more, more preferably 0.5 μm or more, and particularly preferably 1 μm or more, from the viewpoints of ink fixability and strength.

The adhesive layer is used to easily adhere to an adherend when it is used as a label. In the present invention, the adhesive layer is adhered to the substrate to be printed on the back surface without a cover by a separator. In the case of a wound body, an adhesive layer having an adhesive strength to the back surface of the substrate to be printed of 500 gf / 50 mm or less based on a 180-degree peel value (peeling speed 300 mm / min) in order to achieve easy rewinding. It is preferable that Above all, from 1 to 300 gf from the viewpoint of automatic rewinding through a printer or the like and harmony of adhesion to an adherend.
/ 50 mm, particularly preferably 5 to 150 gf / 50 mm.

For forming the adhesive layer, for example, a rubber-based adhesive, an acrylic-based adhesive, a silicone-based adhesive, a vinyl alkyl ether-based adhesive, a polyvinyl alcohol-based adhesive, a polyvinyl pyrrolidone-based adhesive, a polyacrylamide-based adhesive An appropriate pressure-sensitive adhesive such as a cellulose-based pressure-sensitive adhesive or a cellulose-based pressure-sensitive adhesive can be used.

Low adhesive strength to the back surface of the substrate to be printed, maintenance of the initial adhesive strength, and therefore, ease and stability of rewinding when wound, and stability of adhesive fixation to the adherend The pressure-sensitive adhesive layer more preferable from the viewpoint of, for example, is formed by using one or more of a urethane-based pressure-sensitive adhesive, a polyester-based pressure-sensitive adhesive, and a polyamide-based pressure-sensitive adhesive.

The special combination of the printing substrate, the pressure-sensitive adhesive layer having low adhesion to the back surface thereof, and the printing ink includes, for example, a low-adhesion resin such as a silicone resin if necessary. A label sheet provided with a low-adhesion pressure-sensitive adhesive layer such as the above-mentioned polyester-based pressure-sensitive adhesive on a substrate to be printed made of a polyolefin-based resin layer or a layer thereof supported by a reinforcing layer such as paper, There is a combination based on a method in which an ink containing a base resin and a colorant as components is melt-transferred via an ink ribbon or the like.

The adhesive layer is formed by providing an adhesive layer on a separator by an appropriate method such as a rolling method such as a calender roll method or a coating method such as a doctor blade method or a gravure roll coater method, and then printing the adhesive layer on a separator. It can be carried out by an appropriate method such as a method of transferring onto a predetermined surface of a substrate or a method of directly applying a coating on a predetermined surface of a substrate to be printed.

The thickness of the pressure-sensitive adhesive layer is from 0.01 to 0.01 from the viewpoint of achieving low adhesive strength to the back surface of the substrate to be printed and suitability as a label sheet when mounted on a commercially available printer or the like.
It is preferably 500 μm, and 0.5 to 100 μm when considering the stable formability of the adhesive layer having a uniform thickness.
m, preferably 1 to 50 μm, particularly preferably 2 to 20 μm.

As shown in FIG. 5, the pressure-sensitive adhesive layer is of the same type or different types for the purpose of improving the adhesion to the adherend in the case of a label while maintaining low adhesion to the back surface of the substrate to be printed. It can also be formed as a superposed layer of two or more adhesive layers made of an adhesive. In this case, the pressure-sensitive adhesive layer provided inside has a complex stiffness at normal temperature and a frequency of 1 Hz from the viewpoint of preventing outflow (protrusion) due to tightening in the case of a wound body, or improving the adhesion to the adherend. It is preferable that the adhesive layer has a rate of 10 ⁴ to 10 ⁷ dyne / cm ² .

For forming the internal pressure-sensitive adhesive layer, a suitable pressure-sensitive adhesive such as the pressure-sensitive adhesive described above can be used, and a pressure-sensitive adhesive exhibiting a strong adhesive force can be preferably used. The thickness of the internal pressure-sensitive adhesive layer can be appropriately determined according to the necessary fixing force depending on the purpose of use of the label. In general,
It is 500 μm, especially 100 μm or less, especially 20 to 50 μm.

In the present invention, the label sheet is used in a state where the pressure-sensitive adhesive layer is adhered to the back surface of the substrate on which the sheet is to be formed to form a roll. In that case, the pressure-sensitive adhesive layer in the wound body may be located on the outside or inside of the substrate to be printed.

The adhesive layer is covered as shown in FIGS. 2 and 3 in order to prevent contamination of the adhesive layer due to adhesion of dust due to static electricity or the like and to handle the wound body when assembling the cassette. What can be handled as a wound processing thing located inside a printing substrate is preferred. By making the label sheet into a wound body, a long label sheet can be stored in a cassette in a compact state, and the size of the label forming apparatus can be reduced.

In the embodiment described above, the reel 41 on which the ink ribbon 4 is wound together with the winding body 31 inside the case 2
The wound body and the reel are arranged so that the ink ribbon portion rewound from the reel overlaps with the back side of the printing substrate of the label sheet portion rewound from the wound body. The cassette having the fitting portion 21 in which the write head 6 including the thermal head in the thermal transfer type writing means can be positioned on the ink ribbon side of the portion is illustrated.

In the present invention, instead of the above-described label forming apparatus of the thermal transfer type, a label forming apparatus of an appropriate printing system using writing means including various writing heads such as an ink jet type and a laser beam type. Can be. A cassette in which an ink ribbon is not required, such as an ink jet type, can be formed by omitting the ink ribbon 4 and its winding reel 41 and the take-up reel 42 in the illustrated example, so that a smaller cassette can be used. it can.

As the forward feeding means 5 and 51 for rewinding and transporting the label sheet 3 from the winding body 31, a platen roll is exemplified, but in the present invention, the label sheet 3 is wound via a driving source outside the cassette. Appropriate sequential feeding means other than the platen roll type, such as a body rotation type, can be used.

It is necessary to arrange the progressive feeding means at a position where the roll of the label sheet can be rewound. However, since the label sheet is flexible and can easily change the conveying direction via a guide roll or the like, the arrangement position is set. Is not particularly limited.
Therefore, the progressive feeding means can be provided on the apparatus side as illustrated in FIGS. 1 and 2, or the cassette 2 as illustrated in FIG.
0 can be built in. In the case where the progressive feeding means is provided on the apparatus side, a fitting portion 22 is provided as shown in the figure, in which the progressive feeding means can be arranged at a predetermined position.

Further, in the above embodiment, when the cassette is mounted and held in the mounting portion of the label forming apparatus due to the thermal transfer type, the forward feeding means 5 inside or outside the case 5
The structure in which the write head 51 of the writing means outside the case is located opposite to the label sheet 3 via the rewinding portion of the ink ribbon 4 and the pressing force of the writing head can be supported by the forward feeding means has been described. The support of the pressing force can also be achieved by a method in which a support plate or the like is arranged. Therefore, in such a case, it is not necessary to dispose the progressive feeding means and the write head in opposition to each other, and the progressive feeding means can be disposed at an appropriate position where the roll of the label sheet can be rewound.

Further, even when the writing pressure is small and the support of the label sheet via the separate supporting means is not necessary, the forward feed means and the write head are not required to be opposed to each other. The wound body can be arranged at an appropriate position where it can be unwound.

A cutting mechanism including a cutter 7 for cutting a printed label sheet portion into a linerless label 9 is provided as necessary. The cutting mechanism may be any one that cuts the label sheet at a predetermined size, and is formed by an appropriate mechanism such as a mechanism that controls the cutter via a cam or the like to intermittently operate and thereby cut to a predetermined size. be able to.

The length of time required for the label sheet to be unwound from the roll and cut to prevent contamination of the printing surface and the adhesive surface due to contamination of the transport path of the label sheet due to exposure in the air. That is, it is preferable that the length of rewinding of the label sheet from the wound body is short, particularly, it is not more than 10 turns, especially not more than 5 turns in the wound body in the initial length state.

From the above-mentioned point, it is preferable that the cassette is covered with a housing. In particular, the case has a total length of the rolled body of the label sheet and the unwinding portion of 9 mm.
Preferably, the housing covers at least 0% of the opening, and the area of the opening including the sheet outlet of the housing and the exposed portion of the built-in progressive feeding means is preferably 10% or less.

The ink information to be written on the label sheet via the writing head can be formed of any characters, figures, symbols, and the like, for example, a print pattern, a picture pattern, and a barcode pattern. Therefore, an appropriate information label such as an identification label can be formed. Also, a single item or a certain number of labels can be issued on the spot or the like on an occasional basis. It should be noted that the label sheet may be printed in advance with a pattern such as a fixed format, a logo mark, a fixed character, a ground pattern, etc., which need not be provided on the spot, etc.

In the label forming apparatus and the cassette described above, the portions of the label forming apparatus and the cassette which may come into contact with the adhesive layer of the label sheet, such as the progressive feeding means and the transport section, have a low adhesive strength with the adhesive layer. It is preferable that it is formed of a weak member. The preferred adhesive strength of such a member to the adhesive layer is 500 gf / 50 mm or less, especially 300 gf / 50 mm.
mm or less, especially 150 gf / 50 mm or less.

Examples of the above-mentioned members include those formed using an olefin-based polymer, a silicone-based polymer, a fluorine-based polymer, or a mixture of these polymers. Also, a member having a weak adhesive force with the adhesive layer can be formed by a method of coating a material formed of an appropriate material with a coating method or a baking method of the polymer.

It is preferable that the above-mentioned treatment for lowering the adhesive strength is performed on all portions of the label sheet that may come into contact with the adhesive layer, including the sheet outlet of the label forming apparatus and the cassette. In addition, it is preferable that a portion such as a transport path that comes into contact with the adhesive layer of the label sheet is formed to be movable by a roll, a belt, or the like in terms of smooth transport.

The shape of the fitting portion of the write head formed in the cassette and the shape of the fitting portion of the progressive feeding means formed as necessary are arbitrary. In the case of the thermal transfer type, the writing head, the label sheet, and the ink ribbon need to be pressed against each other at the time of writing. However, when the cassette is attached or detached, there is sufficient space between the writing head and the support means such as the sequential feeding means so that the label sheet and the ink ribbon can be interposed. It is preferable that there is a great separation.

The pressure contact state and the separation state may be formed by manually moving the position of a writing head and / or a supporting means such as a progressive feeding means, but preferably formed automatically. This is a possible method. The formation of the pressure-contact state and the separation state by the automatic method is performed by, for example, opening and closing a lid (not shown) for attaching and detaching the cassette 20 in the apparatus body 1 of the label forming apparatus. Can be performed by an appropriate method such as a method of automatically moving.

[Brief description of the drawings]

FIG. 1 is an explanatory cross-sectional view of an example of a label forming apparatus.

FIG. 2 is an explanatory cross-sectional view of another example of a label forming apparatus.

FIG. 3 is an explanatory sectional view of still another example of a label forming apparatus.

FIG. 4 is a sectional view of a linerless label.

FIG. 5 is a cross-sectional view of an example of a label sheet.

[Explanation of symbols]

 Reference Signs List 10: label forming apparatus 5: progressive feeding means 6: writing head 11: cassette mounting part 20: label forming cassette 2: case 21: writing head fitting part 22: fitting part of progressive feeding means 3: label sheet 31: winding Body 33: Substrate to be printed 34: Adhesive layer 4: Ink ribbon 43: Ink information 51: Progressive feeding means 9: Linerless label

Claims (16)

[Claims] 1. A label forming method comprising the steps of: adhering an adhesive layer of a label sheet having an adhesive layer on one surface of a substrate to be printed to the back surface of the substrate to be printed; A label forming apparatus comprising at least a mounting section for a cassette for writing and a writing means for printing on a back surface of a substrate to be printed of a label sheet portion unwound from the wound body. 2. The label forming apparatus according to claim 1, further comprising a forward feeding means for transporting the label sheet while rewinding the label sheet from the wound body, wherein the sequential feeding means and the writing head of the writing means are arranged in an opposed state. 3. The label forming apparatus according to claim 1, wherein a portion of the label sheet that may come into contact with the adhesive layer is formed of a member having an adhesive force with the adhesive layer of 500 gf / 50 mm or less. 4. A label sheet having a pressure-sensitive adhesive layer on one side of a substrate to be printed, wherein the pressure-sensitive adhesive layer is detachably mounted and held on a mounting portion of the label forming apparatus according to claim 1. At least a case is accommodated in a case where a wound body in a roll shape adhered to the back surface of a printing base material, and a write head of writing means arranged outside the case is a label sheet portion rewinded from the wound body. A label forming cassette having a fitting portion which can be located on the back side of the substrate to be printed. 5. The label forming cassette according to claim 4, further comprising a fitting portion which can arrange the forward feeding means disposed outside the case at a position where the roll of the label sheet can be rewound. 6. The label forming cassette according to claim 4, further comprising a progressive feeding means disposed at a position where the roll of the label sheet can be rewound. 7. The label head according to claim 5, wherein when the cassette is mounted and held in the mounting portion of the label forming apparatus, at least the label head of the writing means outside the case and the sequential feeding means outside the case or inside the case are at least label sheets. A label forming cassette which is located in an opposing state via a rewind portion of the label. 8. The printing substrate according to claim 4, wherein the reel around which the ink ribbon is wound is also housed in the case, and the wound body and the reel are the label sheet portions unwound from the wound body. A label forming cassette, which is arranged so that an ink ribbon portion rewound from a reel can be superimposed on the back side of the label, and a fitting portion can position the write head on the ink ribbon side of the superimposed portion. 9. The label forming cassette according to claim 4, wherein the wound body is wound with the adhesive layer of the label sheet inside. 10. The label forming method according to claim 4, wherein at least the back side of the substrate to be printed in the label sheet receives ink and has a single-layer structure or a multi-layer structure exhibiting low adhesive strength to the adhesive layer. cassette. 11. A thin layer or a porous or mesh-like low-adhesion layer according to claim 10, wherein at least the back side of the substrate to be printed is a mixed layer of an ink-receiving resin and a low-adhesion resin, or a thin layer or a porous or mesh-like layer on the ink-receiving layer. Label forming cassette comprising a conductive resin layer. 12. The printing method according to claim 8, wherein at least the back side of the substrate to be printed has a low adhesive strength with the adhesive layer and is made of a resin layer that receives the printing ink, and the adhesive layer adheres to the resin layer. A label forming cassette using a label sheet made of a material having a low force and an ink ribbon made of a printing ink acceptable to the resin layer. 13. The label sheet according to claim 4, wherein a portion of the label sheet that may come into contact with the pressure-sensitive adhesive layer is formed of a member having an adhesive force with the pressure-sensitive adhesive layer of 500 gf / 50 mm or less. A label forming cassette comprising a single layer or two or more superposed layers made of the same or different adhesives. 14. The adhesive sheet according to claim 4, wherein the adhesive force between the pressure-sensitive adhesive layer of the label sheet and the back surface of the substrate to be printed is 500 gf /.
Label forming cassette that is 50 mm or less. 15. The case according to claim 4, wherein the case covers at least 90% of the total conveying path length of the roll of the label sheet and the unwinding portion thereof with the housing, and the opening area of the housing is reduced. A cassette for forming a label which is 10% or less. 16. A liner, wherein ink information is printed on a back surface of a substrate to be printed in a label sheet stored in the label forming cassette according to claim 4 and cut to a predetermined length. Les labels.